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Skip to contentEncode text to Base64 or decode Base64 back to plain text. Tentaco Base64 Encoder / Decoder: review input and get an instant result — free, no sign-up.
Full tool — runs in your browser. No sign-up required.
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Convert text and UTF-8 strings to Base64 and back. Useful for embedding data in URLs, data URIs, JWTs or config files. Handles Unicode correctly and works fully offline in your browser.
Paste or enter your input into Tentaco Base64 Encoder / Decoder. Standard processing runs locally in your browser — contents are not sent to Tentaco servers for that path.
The primary button opens the matching studio mode so you can start without an account. People often search for: base64 encode, base64 decode, base64 converter.
Open Base64 Encoder / Decoder via the studio button (direct mode).
Paste or type your input.
Adjust options and review the preview or output.
Copy or save the result and re-run if needed.
Transfer to Tentaco: No for the standard mode. Processing: local in the browser. Permanent storage: only if you copy or save the result yourself.
LocalThis tool processes data locally in your browser. Tentaco does not receive your file contents for this mode.
No. Base64 Encoder / Decoder processes the standard mode locally in your browser; Tentaco does not receive your input for that path.
Yes. Copy the output from Base64 Encoder / Decoder or download it when the tool offers a file.
Base64 Encoder / Decoder follows the formats named in the UI and description. Unlisted variants are not guaranteed.
After the first load, Base64 Encoder / Decoder often keeps working offline. Online dependencies are labeled.
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